Progress in development of coated conductors by TFA-MOD processing

Teruo Izumi, Yoshitaka Tokunaga, Hiroshi Fuji, Ryo Teranishi, Junko Matsuda, Sigenobu Asada, Tetsuji Honjo, Yuh Shiohara, Takemi Muroga, Seiki Miyata, Tomonori Watanabe, Yutaka Yamada, Yasuhiro Iijima, Takashi Saitoh, Tomotaka Goto, Atsuya Yoshinaka, Akimasa Yajima

Research output: Contribution to journalArticlepeer-review

40 Citations (Scopus)


The recent progress in R&D of coated conductors by TFA-MOD process was reviewed. For the several targets, such as high superconducting performance, high production rate, long tape etc., the steady progresses could be recognized. The high Jc and Ic values of 3.6 MA/cm2 and 291 A were achieved by using a highly aligned CeO2 cap on an IBAD-GZO layer and optimizing the conditions in the multi-coating process, respectively. For improving the production rate, the calcination time was extremely reduced by the development of the new combination of the starting materials. As the improvement of the production rate, the process for achieving high growth rate was investigated by controlling the atmosphere conditions in the high temperature heat treatment. It was found that both high humid partial pressure and low total pressure conditions were both effective to improve the growth rate and the three times higher growth rate with maintaining high Jc than that in the conventional conditions was confirmed. Additionally, a 0.25 m long tape with uniform Ic values over 200 A and the end-to-end I c value of 210 A was successfully fabricated with traveling in the furnace of the Reel-to-Reel system.

Original languageEnglish
Pages (from-to)885-889
Number of pages5
JournalPhysica C: Superconductivity and its applications
Issue numberSPEC. ISS.
Publication statusPublished - Oct 2004
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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